<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .la {
      font-weight: 900;
      font-size: 30px;
      color: orange;
    }

    #ha {
      font-size: 30px;
      color: cadetblue;
    }

    span .lc {
      color: blue;
    }

    div {
      width: 100%;
      height: 100%;
      background-color: blue;
    }
  </style>
</head>

<body>
  <span class="la"> <span class="lc">略略略</span>啦啦啦啦啦啦啦</span>
  <div id="ha">哈哈哈哈哈哈</div>
</body>

</html>